If you are in Nepal and in need of assistance then you can contact the British Embassy in Kathmandu. Here you can speak to the staff about a British visa such as a visitors visa, marriage visa or British . You can also speak to them about a passport to public notary service.
British Embassy Kathmandu
PO Box 106
Monday to Thursday 0815 – 1230/1330 – 1700hrs / Friday 0815 – 1315hrs